Press-slide with gag-connection



Nov. 29, 1938. w. KLOCKE PRESS SLIDE WITH GAG CONNECTION Filed Oct. 15,1937 2 Sheets-Sheet 1 INVENTOR. LL/fl/Y/ KLOC/(E ATTORNEY.

2-9, 1938. w. KLOCKE mass WITH GAG communes Filed 00%. 15. 1937 2Sheets-Sheet 2 m m E V W.

M7 ATTORNEY.

I Patented Nov. 29, 1938 UNITED STATES PATENT OFFICE 2.188.106 Imass-suns wrrn GAG-common William Klocke, WoodhavcmRY. ApplicationOctober 15, 1937, Serial No. 169,175

8 Claims.

This invention relates to press-slides with gagconnections, and providesimprovement-s therein. The present invention provides a slide providedwith a gag-connection. which is improved as to precision of operation,ruggedness. rigidity, and safety. There is also obtained virtualelimination of impact, as between the parts of the slide. and economy inthe manufacture. The present invention has special utility in largepresses, as for example. forging presses (with rated working force of1000 tons for example).

An embodiment of the invention is illustrated in the accompanyingdrawings, wherein: Fig. 1 is a view in front elevation of a large 15mechanical type forging press incorporating the invention.

Fig. 2 is a vertical sectional view of the slide.

Fig. 3 is a perspective view of akey, one of the parts being displacedto better illustrate the construction.

Fig. 4 is a somewhat diagrammatic view illustrating means for operatingthe gag-connection.

Referring to said drawings, numeral 10 deslg nates the press slide. Thepress slide comprises two parts ii and II, which parts are relativelymovable longitudinally. The part i2 is a toolcarrying part. Part Ii isprovided with suitable means H for attaching a connecting rod I6. Thesemeans may comprise spaced ears or lugs, between which the end of theconnecting-rod fits, and through which lugs and the end of theconnecting rod 8. connecting pin I is passed. A bearing surface 20 isprovided on the part Ii for sustaining the thrust of the connecting rodi6.

The slide 10 is reciprocated by any suitable means through theconnecting-rod i6, as by means of crank shaft 25 having a gear 21thereon driven by a pinion 28 on the shaft 29 on which is mounted afly-wheel pulley 30.

The slide i0 and driving parts are mounted on a frame 33. The frame hereillustrated is of massive, rugged and rigid construction, and the pressillustrated is a large mechanical type forging press. A mechanical typeforging press, where the slide i0 has a definite stroke, and embodyingthe present improvements, is capable of producing forgings of a highdegree of accu racy and precision. As an example of the size and duty ofthese forging presses, a forging press according to the designillustrated, has a height of over 19 feet, a weight of over 200,000lbs., and is-designed to apply a normal working force to the workbetween the dies which are .mounted on the bedand slide ll, of 1000tons. 55 The slide i0 is provided with suitable means forguiding itsreciprocatory' movement, which, as here shown, may comprise machinedfaces 40 which slide against corresponding faces on the frame 33, and itis also confined front and back by means which include the gibs l2fastened to the frame 33. The design is such as to obtain accuratereciprocatory movement of the slide under great stresses. 1 1

As heretofore stated, the parts. and I! of the slide iii are relativelymovable longitudinally, and these relativelymovable'parts have lappingportions 04,45. The lapping portion 44, as here illustrated is aprojection on theslide part i I. which enters a recess in theislide part[2, and

has-a sliding fit 'with' the lapping portions 45 on each side of saidrecess. U

. Additional lapping and guiding means, as here illustrated, may beprovided between'the relatively movable slide parts I I and i2, andthereby the accuracy and precision in the working of the press aided.The slide parts II and i2 may-be provided with additional lappingportions 41, 48; the meeting faces of which are accurately fln- 'ishedand fitted, as indicated at 49. to provide a broad bearing between saidparts ii and i2.

Gibs 5i fastened to the slide-part i2 confine the slide part ii-atrightangles to-the faces 49,- so that the slide part i i hasa true axialmovement in the slide part I2.

Key-ways 55 and 5B are formed in-the adjacent sides of the lappingportions 44, 45 of the slide parts ii and i2, and keys 60 are providedfor locking the slide parts Ii and i2 together, and unlocking them. Thekey 60 may be of any suitable form, and the key-ways 55, 56 are of ashape to conform to the keys. Advantageously the keys 60 are of anoscillatory type, and comprise a semicylindrical oscillatory part 62,and the face 64 on the chord side of said semi-cylindrical part 62 ismade so as to be flush with the meeting plane of the lapping portions44, in the unlocking position of the key 60. An advantage of thesemi-cylindrical oscillatory key is that a broad bearing surface may beobtained in the locking position of the key with a small amount of mo-45 tion of the key to and from locking position. Advantageously the key60 also comprises:another part 66 forming the comp1ementary"part-- tothe semi-cylindrical part 62 so that the parts 62 and 66 togetherconstitute a full cylinder. The parts $2, 06 of the key fit snugly inthe keyways and 56, and in many ways give the effect of a fullcylindrical key in the locking position of the key, the key parts $6aiding in sustaining the stresses and strains between the slide parts 552 88. 6 'u and I2, when the key locks these parts together and force isapplied through the driving connections of the slide.

Means are advantageously provided for limiting the extension of saidrelatively movahleslide parts II and I2, so that the limiting positionof extension corresponds to a position of the slide parts in which saidkey-ways 55, 56 are in register, and in which position the lockingtogether and the unlocking of the slide parts II and I2 is el- 4 fected.The means for limiting the extension as aforesaid, ,may. as here shown,comprise-flanges I fastened to the slidepart I2,'against which -theslide part II abuts at said limit of its extension. The flanges I0 alsoperform another function. They maintain a mechanical connection betweenthe slide parts I I and I2 so that the part I2 of the slide is kept fromfalling should other means .for supporting said lower slide part I2(hereinafter referred to) fail. The slide part II being connected to theconnecting rod I6 by the pin I8 will hold up said slide part I2. throughthe flanges I0, in the position of extension of said slide parts II andI2. I 1

Means are provided for counterbalancing the weight-of the slide part I2.Any suitable means for this purpose may be provided. As here showm thecounterbalancing means comprises a fluid pressure device IS (hydraulicor. pneumatic) which device comprises acylinder I0 and a piston"ILhaving a rod I8 connected to the slide part I2 through an-arm orbracket IS.- The cylinder I may be connected through a pipe M to anauxiliary vessel of large size (not shown). so that the displacement offluid in the cylinder is small as compared with that in the auxiliarytank, and thereby only small changes in pressure efl'ected bydisplacement of the; fluid to and from the cylinder I0; Thecounter-balancing means 15,

in the unlocked position of the slide parts II and I2, acts to hold theslide part I2 counterbalanced, so that the slide part II may make anidle reciprocation while the slide part I2 is supported by thecounter-balancing means in a raised position.

Moreover, when the slide part I2 is thus supported, impact between thetop of slide part II and the flange 10 on slide part I2 may be made verysmall.

Suitable means are provided for moving the keys 60 to locktogether andunlock said relatively movable parts II and I2 of the slide. In the formof key shown, that is, a semicyiindrical oscillatory key as illustratedin Fig. 3, the means are such as to oscillate or turn the key, and maycomprise a gear wheel 85 and centered on the axis of the semicylindricalpart E2, which meshes with a gear 01 having an arm 89 through which thesaid gear 81 may be turned, and the turning movement thereof impartedthrough the gear wheels 85 to the keys 60. a

Movement of the arm 89 to move the keys 00 may be efiected in suitablemanner. As here shown, means for the purpose may comprise a cam 00fastened on the crank shaft 25. andthereby turning with-the main crank.A follower 92 is pressed against the cam 90. and acts on a rod 94through a bellcrank 98 and link 91. The rod 94 has a rack 00 thereonwhich meshes with a pinion IOI, which-pinion ha a crank-pin I03 which isconnected to fork-piece I05 through a link I06.

The arm 08 is engaged by said fork-piece I05.

a link 3. The position of the cam all-shown in Fig. 4 corresponds to-theposition of the keys-i0 in which the slide parts Ii and 12 are unlocked;when the treadle III is'free, the dog I03 engages .the collar I01, andholds thekey '50 in unlocking position. In this position the press mayrun witlb 6 out imparting reciprocation to the slide pant I2. Pressureon theireadle III releases the collar I01 from the dog )9;allowsth-followenfl to ride off of the hlgh'part of the cam 90.and'therod 9-. and fork-piece I05 to move under the action 10 Means areprovided. herein for adjusting the bottom-of-the-stroke position of theslide,- which are especially suit-able ior a slide having a gagtype ofconnection. and. for a forging press. These adjustable means comprise ablock I on which the tool or die is mounted (the-block I20 being.

shown with the usualdove-tail grooves I22 for attaching tools). Betweenthe block. I20. and thebottom cfthetslide part I2-a disk I25 is placedhaving one or moresplralinclines I21 on a face, which inclineslbearagainst corresponding'inclines I29 on either the block I20 or the slidepart I2. M here shown the inclines I 29 are formed on a-disk I3I whichis fastenedto the block I20 by dowel-pins I33. Thebloek I20 isfastenedagainst the underside of the slide part I2, through the disksI25, I3I.'by an axial bolt I31 and a nut I39. The disk I25-is round.andmay be turned to adjust the position ,0! the block I20 with relationto the bottom of the slide I2. The block I20 40 is preferably providedwith rectangular sides having a sliding fit against faces on theslide'part I2, as indicated at I40. The block I20 is further confined bygibs I42 fastened to the slide part.

I2, and acting on the block I20 at right angles to 45 the faces I40. Theblock I20 is very accurately and strongly supported by the meansdescribed, which means contribute to the formation of accurate andprecisely formed forgings.

Operation clutches. In a press such as here shown, provim-e. with aslide having a gag-connection. the fly wheel 30, gear 21, crank shaft25,- connecting rod I6, and slide part II. ordinarily run continuously.I

When it is desired to forge. the slide part I2 is locked to the slidepart II, and when it is desired to omit a forging action by the tools,the slide parts I0 and II are unlocked. The normal conditlon andrelation of the slide parts II and I2 may be either a. locked or an'unlocked one, In the embodiments shownherein (see Fig. 4) the slideparts II and I2 are normally unlocked. and the iorging action is broughtabout by the attendant pressing a treadle to etfect the locking togetherof the slide parts II and I2. Release of the treadle effects unlockingof the slide parts II and I2.

When the keys are in the position shown Fig. 2, the slide part II mayreciprocate without driving the slide part l2. The counterbalance I5when the keys 80 are in unlocking position, supports the slide part I2in a raised position.

When it is desired to operate the press to forge (or to perform someother forming operation) the workman presses and holds down the treadleIII. The normal position. of the parts prior to the pressure of thetreadle is shown in Fig. 4. The keys 60 are in unlocking position, withthe chord faces 64 flush with the meeting plane of the lapping parts 44,45, so that the slide part II reciprocates idly with relation to theslide part I2. The pressure on the treadle I I I withdraws the dog I09from the collar I01 on the rod 94. The parts are now in potentialcondition to bring about the locking together of the slide parts II andI2. Whenthe slide part II makescontact with the flanges Ill on the slidepart I2, the keyways 56 in the slide part I I are in register withthe-keyways 55 in the slide part I2. This condition continues while thecrank on shaft 25 is passing through an arc in the upper part of thecircle of revolution of the crank, so that the key parts 92 and $8 ofthe keys 60, during the movement of the crank in said arc, may enter theopposite keyways and lock the slide parts II and I2 together. On thedown stroke of the slide I II (after the follower 92 moves off of thehigh point of the cam 90) the arm 89, acting under the influence ofspring I I 4, rod 94, rack 99, pinion IIlI, crank pin I93, link I96, andfork-piece I95, turns the keys 69 to locking position, locking the slideparts I I and I2 together so that they are driven as a unit to performthe forging or other work of the press. The slide parts II and I2 remainlocked together until the keys are moved to unlocking position by thehigh part of cam 90, which occurs when the crank on shaft 29 (aftermaking a substantially complete revolution) again reaches a position inits upper arc of movement. The high part of cam acts on the follower 92,and on the arm 89 through the intermediate parts hereinbefore described,to turn the key 60 to unlocking position. The cam 90 may be set so thatits high part acts on the follower 92 at the upper dead center positionof the crank, or thereabout. If the treadle III has not been releasedwhen the high part of the cam 90 passes the follower 92, the keys Iillwill be im- 1 mediately returned to locking position, and the slideparts II and I2 will be driven as-a unit on the working stroke which isinitiated at this time, and on succeeding working strokes, as long asfoot-pressure is maintained on the treadle I I I.

If the treadle III is released while the slide I 0 is on its up-stroke(before or while the high part of cam 90 passes the .follower 92), thedog Ill would engage the collar I01 on the bar 94 when the high part ofthe cam 90 makes contact with the follower 92 (at which time the keys 90are moved to, unlocking position) and prevent the keys 60 being moved tolocking position when the high part of cam 99 passes the follower 92.When the high point of the cam 9!) acts on the follower 92 as justdescribed (position Fig. 4), and the rod 94 is actuated, the rack 99under the action of spring I I! rotates the pinion IIlI, and the pin I03thereon shifts the fork-piece III! to move the arm 99 to turn the keys60 to the position shown in Fig. 2, that is, where the chord faces 64 ofthe cylindrical key parts 82 and 68 are flush with the meeting plane ofthe slide parts II and I2. The slide part II can then reciprocate idlywith respect to the slide part I2, the slide part I2 being the slide.

supported in an elevated position by the counterbalancing means 15.

To set the dies or tools (not shown) mounted on the bottom of slide I0and on the bed, the nut I39 on the bolt I31 is loosened and the disk I25is turned until the block I20 is adjusted at a level which provides aproper clearance between the dies or tools. The nut I39 is thentightened to hold'the block tightly in its adjusted position. The spiralinclines I21 on the disk I25 and on disk I9I, depending on the relativepositions thereof, determine the position of the block I20 with respectto the bottom of the slide part I2, and hence the bottom-of-the-strokeposition of A broad and strong bearing is provided by the inclines I21.

The invention may receive other embodiments than that hereinspecifically illustrated and described.

What is claimed is:

1. A press-slide comprising two parts, relatively movablelongitudinally, one a tool-supporting part and the other having meansfor attaching a connecting-rod thereto, said relatively movablepartshaving lapping portions, key-ways in adjacent sides of the lappingportions, a semicylindrical oscillatory key, and means for moving saidkey to and from a position wholly in one key-way to and from a positionpartly in each of the two key ways to lock together and unlock saidrelatively movable parts.

2. A press-slide according to claim 1, further comprising lateral guideson the press frame for confining the movement of one of said relativelymovable parts, and lateral guides on the aforesaid relatively movablepart for guiding the other relatively movable part.

3. A press-slide according to claim 1, further comprising means forlimiting the extension of said relatively movable slide-parts, whereinthe limiting position corresponds to a position of the slide-parts inwhich said key-ways are in register.

. 4. 'A press-slide according to claim 1, further comprising means forcounter-balancing the weight of the lower one of the slide-parts.

5. A press-slide according to claim 1, wherein said key comprisesanother key part forming the complementary part of a cylinder.

6. A press-slide comprising two parts relatively ,movablelongitudinally, one a tool supporting part and the other having meansfor attaching a connecting-rod thereto, said relatively movable partshaving lapping portions, key-ways in adjacent sides of the lappingportions, keys comprising a semi-cylindrical oscillatory part, the faceon the chord-side of which, in the unlocking position, is flush with themeeting plane of said lapping portions, means for oscillating said keysto look together and unlock said relatively movable parts, and means forlimiting the extension of said relatively movable slide-parts to aposition corresponding to a position of the slide-parts in which saidkey-ways are in register.

A press-slide according to claim 6, wherein said keys further compriseanother part forming the complementary part of the cylinder.

8. A press -slide according to claim 6, further weight of the lower oneof said slide-parts.

WILLIAMKIDCKI-

